Process of tanning.



r nrrgn JAMES L. MARTIN, or TERRE L, TEXAS.

PROCESS OF TANNING;

Specification of Letters Patent.

tatented July 10,1906.

Application filed January 29, 1908. Serial No. 298,477.

To (all whmrz, it nut 1 concern.-

Be it known that 1, JAMES L. MARTIN, a

citizen of the United States, residing at Ter- Tell, in the county of Kaufman and State of Texas, have invented a new and useful Process of Tanning, of which thefollowing is a speci fication.

This invention relates to a process of tanrung.

An object of the invention is in a ready, expeditions, and economical manner to tan rides of any weight and in the shortest possible space of time compatible with eii'ective work. i

with the above and other objects in view,

will appear asthe nature of the invention is better understood, the same consists in a novel process of tanning, as will be hereinafter fully described and claimed. i In carrying the invention into effect there is employed a novel ooze which contains an ingredient that operates ra idly, eil'ectively, and without detriment to t 10 hide to tan it.

The ingredient consists of persimmon-bark, which is included inan ooze containing other well-knowningredients having high tanning properties. The ooze consists of broom-weed,

gum-gambler, alum, common salt, and per simmon-bark in about the following proportions, by measure and weight: broom-weed ooze, ten gallons; gum-gambier, four pounds; pulverized alum, one pound; common salt, two pounds; persimmon-Lark, three pounds.

To make ten gallons of broom-weed ooze, take fifteen gallons of water, and to this add thirty pounds of broom-weed. This mix- ;ture is boiled from one to two hours until onethird of the water has been evaporated, leaving ten gallons of ooze ready tor use. The gum-gambier is dissolved in as small an amount of water possible and. when dissolved is poured into the broom'weed ooze. The alum and salt are both pouredinto the mixture while still warm, and the mixture is then stirred until the alum and salt are thoroughly dissolved. The freshly-peeled persimmon-bark is added at the same time the hides are put into the ooze and will have imparted its strength to the mixture within a period of twelve hours In carrying out the procedure the hide is first soaked in clear water, as usual, to render it soft. It is then removed from the waterbath and fleshed in any approved manner and is then depilated by subjecting it to a bath consisting of Water in sufficient quantity to cover the hide or hides, to which is added, by measure, slaked lime and ashes in the ro 0r,- ion of two-thirds of lime and one-t lir of ashes, by measure, to the bulk of the water, andthis is stirred until it becomes a thin battcr. bath until the hair will slip, which will take from three to thirty hours. During this rocedure where the hide is large it shoul be aired for three minutes three times a day. When the hair is loosened or in a condition to slip, the hide is removed, depilated, and then placedin clear water, the water being changed, preferably, about three times. This is done in order to remove the lime, so that in the subsequent handling of the hide the operators hands will not be injured thereby, and, to determine when the lime is 'all out of the hide it will only be necessary to press it with the finger, and it the dent made thereby remains it is evident that the lime'has entirely disappeared. Thehideis then placed'in the abovedescribed ooze and remains therein until thoroughly tanned, which will require from about six hours for thin hides to ten days for heavy hides, these eriods obtaining in warm weather; but in coo weather it will take about a quarter longer time for roper tanning.

To give the desired 00 or to the hide, any well-known coloring agent may be employed for the purpose, and as-this forms no part of the present invention detailed description thereof is omitted. After the hide has been properly tanned it is treated in the usual or any preferred manner to give it the finish,

I claim 1. The herein-described method of tanning.- which consists in subjectin the hide to an ooze containing persimmon-bark.

2. The herein-described process of tanning 'which consists in subjectingth hide to an ooze consisting of broom-weed, gum-gambier, alum, common salt, and ersimmon-bark.

3. The herein-describet method of tanning The hide is allowed to remain in this which consists in subjecting the hide to an In testimony that I claim th foregoing as ooze consisting of the following ingredients my own I havo hereto affixed my signature in substantially the proportions-sgecified by i in the presenqs'} of two witnesses;

measure and weight-broom-we ooze ten I V JAMES L. MARTIN. 5 gallons, gum-gambier, four pounds, ulver- Witnesses:

-ized alum, onelpound, common sa 1;, two G. G. KERR,

pounds, persinunOn-bsrk, three pounds. Gr. W. CLARK. 

